Toshiba develops adjustable filter for LCD privacy

Toshiba has developed a technology that allows users of devices with liquid crystal displays (LCDs) to adjust the viewing angle so that its harder for people to view the screen from an angle, the company said Friday.

A grid of small, black squares will appear over the displayed image on screens fitted with the technology when viewed from the side, said Midori Suzuki, a spokeswoman for Toshiba in Tokyo.

The technology works by controlling the alignment of the pixels and requires a filter to be fitted on top of the display screen and a display controller with support for the function. The addition of this electronic controller means users can vary the viewing angle depending on their needs or switch the function off, she said.

Toshiba hopes to begin mass production of display panels featuring the technology in the first half of 2004. The company has not decided the exact price, but said the technology will add approximately ¥15,000 (US$140) to the price of a 15-inch LCD screen.

To anyone that has followed the development of LCD technology the new displays may come as a bit of a surprise. LCD panel makers have collectively pumped millions of dollars into developing displays that can be seen from a wide range of vantage points and many of the latest panels boast viewing angles of up to 170 degrees in both the horizontal and vertical planes.

While wide viewing angles are desirable in applications where more than one person may be viewing the display, such as a television set, in other applications the ability of bystanders to see what is on the screen may be undesirable, said Suzuki. Such applications include bank automated teller machines and notebook computer and cellular telephone screens where privacy is important in applications such as e-mail, she said.

Join the newsletter!

Or

Sign up to gain exclusive access to email subscriptions, event invitations, competitions, giveaways, and much more.

Membership is free, and your security and privacy remain protected. View our privacy policy before signing up.

Error: Please check your email address.
Keep up with the latest tech news, reviews and previews by subscribing to the Good Gear Guide newsletter.

Martyn Williams

IDG News Service
Show Comments

Brand Post

Most Popular Reviews

Latest Articles

Resources

PCW Evaluation Team

Tom Pope

Dynabook Portégé X30L-G

Ultimately this laptop has achieved everything I would hope for in a laptop for work, while fitting that into a form factor and weight that is remarkable.

Tom Sellers

MSI P65

This smart laptop was enjoyable to use and great to work on – creating content was super simple.

Lolita Wang

MSI GT76

It really doesn’t get more “gaming laptop” than this.

Jack Jeffries

MSI GS75

As the Maserati or BMW of laptops, it would fit perfectly in the hands of a professional needing firepower under the hood, sophistication and class on the surface, and gaming prowess (sports mode if you will) in between.

Taylor Carr

MSI PS63

The MSI PS63 is an amazing laptop and I would definitely consider buying one in the future.

Christopher Low

Brother RJ-4230B

This small mobile printer is exactly what I need for invoicing and other jobs such as sending fellow tradesman details or step-by-step instructions that I can easily print off from my phone or the Web.

Featured Content

Product Launch Showcase

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?